Answer:
Step-by-step explanation:
Elimination method:
Add these equations to eliminate x:
Then solve for y:
Write down an original equation:
Substitute 4 for y in :
{ and } ⇒ 
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<em>hope this helps...</em>
Translation - a slide up, down, left, or right
Reflection - a mirror image across an axis
Dialation - a scaled image that increaes or decreases in size
Rotation- the movement by a degree
Total money spent= initial 4 apps plus additional apps
f(x)=4(2.99)+1.99(x)
f(x)=11.96+1.99(x)
3/4 for the fraction less than 1 since 3/4= 0.75.
For the fraction greater than 1 use 4/3 sicne4/3 = 1.333333....
Hope this helps!
To find a perpendicular line you first need to see the equation in slope intercept form. To do that you need to solve for y.
2x - 5y = 20 ---> subtract 2x from both sides
-5y = -2x + 20 ---> divide by -5
y = 2/5x - 4
Now that you have this, note that a perpendicular line has opposite and reciprocal slope. Since the slope in our equation is 2/5, that means the new line will have -5/2 slope. So we use the point given and the slope to find the y intercept.
y = mx + b
-8 = -5/2(7) + b ---> multiply
-8 = -35/2 + b ---> add 35/2 to both sides
19/2 = b
Now use our new slope and new y intercept to write the new equation.
y = -5/2x + 19/2
