9f^2–10– 1+2f^2+ – 7f^2

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4f² - 11

Step-by-step explanation:

first group the like terms

9f²-2f²-7f² is all like terms

-10-1 are like terms

9f²-2f²-7f² -10-1

4f² - 11

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.