Question 1
A linear function passes through the points (2, 7) and (5, 16). Determine the equation of the line in the form y = mx + c.
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General Mathematics Β· Unit 1 Β· Linear equations and their graphs Β· Straight-line graphs
Understand and use the slope-intercept form of a linear function, π¦ = ππ₯ + π where π is slope (gradient) and π is π¦-intercept.
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Question 2
A mobile phone plan charges a monthly base fee of $15 and $0.20 per text message sent. Which equation models the total monthly cost, $C$ dollars, as a function of the number of text messages sent, $n$?
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