Write the number rule for these order pairs p6. (1,4),(2,7),(3,10),(4,13). rule

2 answers

x = + 1
y = + 3
slope is the same for all line segments
= 3

so y = 3x + b
plug in one of the points, I will use (1,4)
4 = 3(1) + b
b = 1

rule, or the equation is
y = 3x + 1