The expression 2x+6 is equal to 9 for some value of x. Without finding the value of x, determine the values for each of the foll
owing expressions. show how you arrived at each answer.
(a) 4x+12 (b) 2x+9 (c) x+3 (d) -6x-18 (e) 2x+1 (f) 10x+32
(a) 4x+12 (b) 2x+9 (c) x+3 (d) -6x-18 (e) 2x+1 (f) 10x+32
1 answer:
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Answer:
B
Step-by-step explanation:
We see that the line intersects the y-axis at -1. As a result, we need to choose an equation with -1, either B or C. We see that the different is the slope. For choice B, the slope is , meaning that every unit up equates to 3 blocks to the right. Counting along the line, we see that this is correct.