Question

What is the slope-intercept form of the function that contains the point (–1, 5) and has a slope of –4?

y =__ x +__

Answer 1

i already know y = -4 x + __

Answer 2

@cwrw238

Answer 3

yes thats correct -4 is the slope and goes in front of the x

Answer 4

now you know a point on the line reprenting the equation - that is (-1,5) which tells you that when x = -1 y = 5
so you replace the x and y with -1 and 5;-

5 = -4(-1)x + c

- i just called the number we need to find c

Answer 5

sorry that should be
5 = -4(-1) + c

Answer 6

now we need to find c
now -4*-1 = 4 so
5 = 4 + c

can you find what c is?

Answer 7

c = 1

Answer 8

right

so the final answer is
y = -4x + 1

Answer 9

Thank you so much :D

Answer 10

yw

Answer 11

there is a general formula for slope-intercept

y = mx + c

where m = slope and c = intercept on y-axis