Use y = mx + b
plug in what you are given
m = slope so that is 2
y = 2x + b
then plug in the x and y coordinates to solve for b
5 = 2(2) + b
5 = 4 + b
subtract 4 from both sides
1 = b
The equation: y = 2x + 1
plug in the x- coordinate of the second point (that has the missing y-coordinate)
y = 2(4) + 1
Solve
y = 8 + 1
y = 9
The missing y-coordinate of the second point is 9 so the coordinate point looks like (4, 9).
Hope this helps :)
Answer:
6 pk noisemakers (6 x 5 = 30 noisemakers)
1 pk balloons (1 x 30 = 30 balloons)
Step-by-step explanation:
divide 30 by 5, = 6
buy 6 packs noisemakers and one pack of balloons
5 is a constant. (it has no variables)
x + 2 is not a constant. It does, however, have two terms, x and 2.
(terms are seperated by addition/subtraction)
This rules out a and b.
As for c... 5(x+2) implies <em>multiplication</em>, which would be a product, not a sum.
d. The product of a constant factor 5 and a 2-term factor x+2