#2 Journal – Question #7 page, 567

1) This question involves getting a question and finding how to graph it onto a grid. Ex: put y = 2x – 4 onto the graph provided

i found this problem easy because it didn’t have many big numbers and was pretty straight forward, this goes for the whole question of number 7. The one part in this question that took me a bit longer is plotting it in a domain and range but i still got that with relative ease. Math problems with plotting the slope y-int form are not a challenge for me and i can do the further ones that are given to me.

2) The x-intercept is where the function intercepts the x-axis. The y-intercept is where the function intercepts the y-axis.
When you look for the x-intercept given a equation, you set y = 0 then solve for x. Why is that?

you set the y-axis to 0 because that means all you’re left with is the x-axis and it requires no further factoring.

#3 Journal – Question #8 page, 605

This question states: After 7 days of heavy rainstorms, the water level in a river peaked at 2.85m above the regular level. Four days later the water dropped to 2.25m above the regular level. Assuming the water level falls at a constant rate, determine a function h(t) which describes the height of the river above regular level as a function of time. Take t = 0 at peak water level

This question made me think to begin with but from previous knowledge i knew that i had to find the slope first and put it into the equation

This question took me a while to wrap my head around and i had to look at the answer to find out if i was truly right but after a while i got it, further questions like this might be a bit of a struggle for me in the future.