Answer:
Step-by-step explanation:
Given
Required
The number of each coin
The total coins can be represented as:
So, the worth of the coin is:
The equations to solve are:
Make d the subject in:
Substitute in
Collect like terms
Solve for q
Substitute in
So:
The equation of a line is given by the expression:
y=Mx + b
This is the slope form of an equation where M is the gradient of line and b is the y intercept.
For the slope, M= change in y values/ change is x values
(-3,8) , (-7,8) thus the slope m,=(8-8)/(-7--3)
m=0/-4 =0
the slope is 0
To find the b substitute the values in the equation y=Mx+b
Taking point (-3,8) and slope of 0
y=Mx+b
8=0*(-3) + b
8=0+b
8=b
The value of b is 8
The equation of the line will be;
The equation of the line is y=8