SOLUTION: Given these points (20, 30) and (50, 65) Find linear model y=ax+b

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Question 30484: Given these points (20, 30) and (50, 65)
Find linear model y=ax+b
Answer by atif.muhammad(135) About Me  (Show Source):
You can put this solution on YOUR website!

Let's find "a" first:
(20,30)
(50,65)
a+=+%2865-30%29%2F%2850-20%29
a+=+35%2F30
y = ax + b
y=+%2835%2F30%29x+%2B+b
(20,30)
+30+=+%2835%2F30%29%2A+20+%2Bb
+900%2F30+=+%28700%2F30%29+%2Bb+
+200%2F30+=+b
+y+=+ax+%2B+b
+y+=+%2835%2F30%29x+%2B+200%2F30
+y=+%2835x+%2B+200%29%2F30