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Complete Question
Kiran buys supplies for the school’s greenhouse. He buys bags of fertilizer and
packages of soil. He pays $5 for each bag of fertilizer and $2 for each package of soil,
and spends a total of $90. The equation
5f + 2p = 90 describes this relationship.
If Kiran solves the equation for p, which equation would result?
A. 2p = 90 − 5f
B. p = 5f − 90
/2
C. p = 45 − 2.5f
D. p =
85
f
/2
Answer:
A. 2p = 90 − 5f
Step-by-step explanation:
The equation
5f + 2p = 90 describes this relationship.
We are to solve for p, this means to make p the subject of the formula , hence:
5f + 2p = 90
Subtract 5f from both sides.
5f - 5f + 2p = 90 - 5f
2p = 90 - 5f
Divide both side by 2
2p/2 = 90 - 5f/2
p = 90 - 5f/ 2
If Kiran solves the equation for p, the equation that would result is
2p = 90 − 5f
.
Further simplified to :
p = 90 - 5f/ 2
Option A is correct.
Point slope form:
(y-y1) = m (x-x1)
m=slope=1/2
given point (x1,y1) = (-2,7)
(y-7) = 1/2 (x+2)
slope intercept form:
y-7 = 1/2x + 1
y = 1/2x + 8
ANSWER: y=1/2x + 8
Answer: y=2x+5
Slope is 2
Step-by-step explanation: y=2(x+1)+3
y=2x+2+3
y=2x+5
Answer:
C y = 4x + 5
Step-by-step explanation:
use y = mx + b
we need m and b to complete the equation.
m = slope
b = y-intercept (when x =0)
(0, 5) is the y-intercept because that's when x = 0
slope is 4
so... y = 4x + 5
