Answer: y= -3x +5
Explanation:
Slope: y= mx+ b
m being the slope
b being the y intercept
You're given the slope, so you substitute m for -3
y=mx+b
y = -3x + b
You have the coordinates (4, -7) which you can substitute (the line passes through that point.)
-7 = -3(4) + b
-7 = -12 + b
+12 +12
5= b
y= -3x + b
Check:
-7 = -3(4) + 5
-7 = -12 + 5
-7 = -7