Answer:
x = -4
Step-by-step explanation:
Notice that the two points given, share the same x-value even when the y-value changes. This is because the equation is going to be a vertical line at -4 on the x-axis. Being a vertical line, you cannot take its slope using the slope formula of: <em>m = (y2 - y1) / (x2 - x1)</em> because the denominator will result in a 0 and you cannot divide by 0 in mathematics.
Answer:
Step-by-step explanation:
A mechanic earns $20 an hour, but 25% of his earnings are deducted for taxes and various types of insurances. What is the least number of hours the mechanic must work in order to have no less than $450 in after-tax income
Given data
Say the number of hours worked is x hours
Hence the earnings for x hours
=$20x
Let the total earnings be y
25% of the earning is
=25/100*20x
=0.25*20x
=5x