What I learned this week is how to eliminate by adding the equations, first you are given 2 equations to start with like x + 2y = 3 and -x + 3y = 2, to find x you have to multiply a number to cancel out the y value, so for this case you times the first equation by 3 and the second by -2, now both y values are +6 and -6, that becomes 0, after you add the 2 x values together and becomes 5, now you divide both sides by 5 and equals 1, to find y the x in this equation is already have a 0 value, now you do you take the y value that u multiplied already and divide both sides by 5, so now y value is 1, the coordinates is (1,1)

Find the coordinates from the equations, so at first you are given 2 equations like y=-2x+1 and y=x-5, you already have the slope and point given so all you need to graph the 2 equations that was given to find the points that cross, so for this equation the point that cross is (2,-3)

This week I learned how to find a equation in general form, general form is when the equation is equal to 0, first you put the numbers given in a t chart, then you find the slope, after you find the slope you put it in a general form after you multiply the x with the number in the bracket and then you add the same amount to cancel out the number that equals to. 

This week in week 12 in math 20 I learned about parallel slopes and perpendicular slopes, parallel slopes is that two lines are parallel if their slopes are equal and they have different y-intercepts, and perpendicular slope are negative reciprocals of each other.

This week i learned about function notations, in the equation it tells you to do the equation while given the x value already, so in the equation f(x) = 2x+7 and f(x) = 12, the 12 represents x, so in the equation you would do 12 x 2 = 24 then you + 7 so the answer will be 31

I learned this week the difference between a relation and function graph. A function graph has unique points and spaced out from each other. A relation is a graph that’s not unique, and the points on the graph are above one another.

In week 9 I learned something new and fun to do, I learned about Domaine, Range, and how to out them in order. Also I learned on the graft that if the dot is filled in it means equal to, and if it’s not filled in it mean greater or less than

In week 8 I learned about graphing, we didn’t really learn about graphing yet though but all I know about graphing that there is positive and negative numbers, and a y and x axel

Week 7 I learned how to factorize polynomials, it’s pretty easy, just takes a lot of thinking. First you look at the numbers and check, I this photo all numbers are divisible by 3 and x so I put them out side the bracket, then I do the prime factorization of 15 and 12 which is 3,5 and 3,4 so I put that in the brackets with x^2