Answer:
y = -7x-14
Step-by-step explanation:
The slope intercept form of a line is given by
y = mx+b where m is the slope and b is the y intercept
y = -7x +b
Substitute the point in for x and y to find b
7 = -7(-3) +b
7 = 21 +b
Subtract 21 from each side
7-21 = 21-21+b
b = -14
y = -7x-14
Answer:
y = -7x - 14
Step-by-step explanation:
Since it must be in a slope intercept form, you can input you rvalue sinto y+mx=b, where m represents the slope, and b represents the y-intercept.
Since we already have the slope, you can input -7 into the equation already and end up with y=-7x+b.
With the given coordinates, you can plug them into the equation of y=-7x+b and solve for b to obtain the y-intercept.
(7) = -7 (-3) + b
7 = 21 + b
- next, you use the zero rule to isolate b, subtract 21 from the right, and subtract it from the left as well to "move it over"
7 - 21 = b
-14 = b
Therefore the final equation is y = -7x - 14.
