A long distance phone call between two cities costs $3.43 for 7 minutes. What is the rate in cents per minute?
1 answer:
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Answer:
<h2>A) y= -x + 1</h2>Step-by-step explanation:
The slope-intercept form of an equation of a line<em>:</em>
<em>m</em><em> - slope</em>
<em>b</em><em> - y-intercept</em>
The formula of a slope:
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We have the points (-1, 2) and (4, -3).
Calculate the slope:
Put the value of the slope an the coordinates of the point 9-1, 2) to the equation of a line:
<em>subtract 1 from both sides</em>
Finally: