Answer: y = 1/4x + 1.25 ?? OR y = -4x + 23
Step-by-step explanation:
y = mx + c
3 = 1/4 (5) + c
3 = 1.25 + c
-1.25 from both sides
c = 1.75
y = 1/4x + 1.75
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perpendicular gradient = -4
y = -4x + c
3 = -4(5) + c
3 = -20 + c
+20 to both sides
c = 23
y = -4x + 23
