Linear: y=ax + b (Junior Cert Mathematics): Quizzes

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Linear: y=ax + b
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What shape does a linear function create when graphed on a coordinate plane?

A straight line

What is the standard form of a linear function?

f(x)=mx+cf(x) = mx + c

In the equation f(x)=mx+cf(x) = mx + c, what does mm represent?

The slope of the line

In the equation f(x)=mx+cf(x) = mx + c, what does cc represent?

The y-intercept

Why are linear functions called 'linear'?

They graph as straight lines

On which axis are the input values placed when plotting a linear function?

The x-axis

For the function f(x)=x+3f(x) = x + 3, what is the value of yy when x=1x = 1?

44

Which points form a straight line for the function f(x)=x+3f(x) = x + 3?

(1,4),(2,5),(0,3)(1, 4), (2, 5), (0, 3)

What is the final step when plotting a linear function?

Connect the points with a straight line

How far does the line representing a linear function extend?

Infinitely in both directions

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