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Solve the equation

3a + 8 = 20

3a + 8 = 20

Solve the equation

5a + 2 = 3a - 8

5a + 2 = 3a - 8

Is this a linear formula?

y = 5 - 2x

y = 5 - 2x

A

yes

B

no

Is this a linear formula?

y = 3x

y = 3x

A

yes

B

no

What is the general form of a linear formula?

What is the correct calculation for the gradient of the line through A(3,5) and B(7,-11)?

A

5−−113−7=16−4=−0.25

B

−11−57−3=−164=−0.25

C

3−75−−11=−416=−4

D

7−3−11−5==4−16−4

Solve the equation

5 = -4 x 3 + b

5 = -4 x 3 + b

What formula corresponds to the table?

A

n=6t+2

B

n=2+6t

C

n=2⋅6t

D

n=2⋅6t

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