<h2>
y = 4x - 4</h2>
y = mx + c
First find the gradient.
6 - 2 = 4
Your gradient, m, is 4x.
Now find the constant, c.
y = mx + c
<u>if y = 4 and x = 2</u>
<u />
4 = 4 * 2 + c
4 = 8 + c
4 = 8 - 4
c = -4
<h2>
y = 4x - 4</h2><h2>
</h2>
You can check it's right by substituting the other values.
y = 4x - 4
E.G
36 = 4 * 10 - 4
36 = 40 - 4
Jason should save 105 per week for 3 weeks to have enough money to purchase the camera.
Given:
total cost = 490
amount saved = 175
time left to save = 3 weeks.
490 = 175 + 3x
490 - 175 = 3x
315 = 3x
315/3 = 3x/3
105 = x
to check:
490 = 175 + 3(105)
490 = 175 + 315
490 = 490
Answer:
-1.2666666667 is the answer of this problem.
It would just be the tot foot time the cost
7.5 X 0.50 = $3.75
Answer:
1. Multiply (2) by 2 to eliminate the x-terms when adding
2. Multiply (2) by 3 to eliminate the y- term
Step-by-step explanation:
Use this system of equations to answer the questions that follow.
4x-9y = 7
-2x+ 3y= 4
what number would you multiply the second equation by in order to eliminate the x-terms when adding the first equation?
4x-9y = 7 (1)
-2x+ 3y= 4 (2)
Multiply (2) by 2 to eliminate the x-terms when adding the first equation
4x-9y = 7
-4x +6y = 8
Adding the equations
4x + (-4x) -9y + 6y = 7 + 8
4x - 4x - 3y = 15
-3y = 15
y = 15/-3
= -5
what number would you multiply the second equation by in order to eliminate the y- term when adding the second equation?
4x-9y = 7 (1)
-2x+ 3y= 4 (2)
Multiply (2) by 3 to eliminate the y- term
4x - 9y = 7
-6x + 9y = 12
Adding the equations
4x + (-6x) -9y + 9y = 7 + 12
4x - 6x = 19
-2x = 19
x = 19/-2
= -9.5
x = -9.5