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# Author Archives: clairea2018

# week 17- math 10

this week i math 10 we learned some new terms for arithmetic sequences.

here are a couple of examples that we learned.

Find the 25th term if the common difference = 10 and starts at 2 To solve this sequence, we follow this basic rule: tn=t1 + (n-1)d. We can replace “tn”

# Week 15- Math

this week in math 10 we learned elimination

To solve elimination you need line the two equations together like you were about to add/subtract,

the next step would e to try to get a zero pair. you would need to multiply the equation to get a zero pair. once u got your zero pair add the two together to isolate x or y

once that is done you can now you can solve for the other equation using the best friends share desserts.

Thats how you would use elimination to solve a system

# Week 14- Math 10

This week in math 10 we learned how to use substitution to solve a system. To start off you need to pick if you want to solve using X or Y.

once you have picked which variable you want to solve with you need to isolate the variable to get the one you picked alone

here is my example:

x+y=1.3 ——- Y= 1.3-x

that is the equation because you subtracted x to both sides.

then you need to insert y=1.3-x into the second equation where y i.

20x+40(1.3-x)=35

20x+52-40x=35

now you need to subtract 52 on both sides

20x-40x=-17

-20x/-20=-17/-20

x=17/20

thats how you do substitution.

# week 12- math 10

This week we learned about different slope equations

to find the midpoint you do y1+y2/x1-x2

To find the distance you either do y1-y2 or x1-x2 or use pythagorean theorem.

This makes it super easy to find the distance and the midpoint.

# week 11- math 10

This week we talked about slopes.

we talked about horizontal vertical and oblique lines

oblique lines are on angles

horizontal are equal to zero

vertical lines are equal zero

The easiest way to remember is slope guy!

# Math 10 – Week 13

This week in math 10 we learned 3 important equations.

Point slope form, Slope y-intercept form and General form.

My personal favorite in point slope.

This is what a point slope for equation would look like:

3(x+4)=y-2

This is general form:

-9x+3-y=0

This is slope y intercept form

Y=mx+b