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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Hello there!
For this question, we can use slope-intercept form of a line. The following equation is the format for slope-intercept form:
In this equation, m is the slope and b is the y-intercept. The slope and y-intercept is given. Thus, we just "plug in" the given values into the equation to get our answer. Replace "m" with "3/2" and replace "b" with "-2". After doing so, you get the following equation for the line.
That should be your answer. Hope this helps! :)
~AgentCozmo4, Junior Moderator
For this question, we can use slope-intercept form of a line. The following equation is the format for slope-intercept form:
In this equation, m is the slope and b is the y-intercept. The slope and y-intercept is given. Thus, we just "plug in" the given values into the equation to get our answer. Replace "m" with "3/2" and replace "b" with "-2". After doing so, you get the following equation for the line.
That should be your answer. Hope this helps! :)
~AgentCozmo4, Junior Moderator
Slope-intercept form:
y = mx + b
"m" is the slope, "b" is the y-intercept (the y value when x = 0)
You need to find "m" and "b".
In the table, when x = 0, y is 0, so the y-intercept is 0
y = mx + 0 or y = mx
To find "m", you can use the slope formula and plug in 2 points:
(0,0) and (1, 3)
m = 3
Slope: 3
y-intercept: 0
Equation: y = 3x