How to find instantaneous rate of change from a graph

100 POINTS AND BRAINLIEST ANSWER

What is the instantaneous rate of change of the function f(x) = 6x^2 – x at the point (-1,7)
a. -13
b. -5
c. 7
d. 11
What is the equation of the line tangent to the function f(x) = -x^2 + 5 at the point (1,4)
a. y = -x + 5
b. y = -x + 9
c. y = -2x + 6
d. y = -2x + 9

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