QUANTITATIVE MODELLING (DSC1520)
MAY/JUNE 2020
Question 1
A line cuts the x-axis at 4 and cuts through the point (2;4). The equation of the line is
[1] y = −12.
[2] y = 2x.
[3] y = −2x + 8.
[4] y = −12x + 2.
∆𝒚 𝟒
𝒎= = − = −𝟐
∆𝒙 𝟐
𝒚 = −𝟐𝒙 + 𝒄
−𝟒 = −𝟐(𝟐) + 𝒄
𝒄=𝟖
𝒚 = −𝟐𝒙 + 𝟖
𝐎𝐏𝐓𝐈𝐎𝐍 [𝟑]
Question 2
Evaluate
and give your answer correct to three decimal places.
[1] 0,199
[2] 4,581
[3] 0,218
[4] 5,032
Using the correct calculator: answer = 4,581
𝐎𝐏𝐓𝐈𝐎𝐍 [𝟐]
1
MAY/JUNE 2020
Question 1
A line cuts the x-axis at 4 and cuts through the point (2;4). The equation of the line is
[1] y = −12.
[2] y = 2x.
[3] y = −2x + 8.
[4] y = −12x + 2.
∆𝒚 𝟒
𝒎= = − = −𝟐
∆𝒙 𝟐
𝒚 = −𝟐𝒙 + 𝒄
−𝟒 = −𝟐(𝟐) + 𝒄
𝒄=𝟖
𝒚 = −𝟐𝒙 + 𝟖
𝐎𝐏𝐓𝐈𝐎𝐍 [𝟑]
Question 2
Evaluate
and give your answer correct to three decimal places.
[1] 0,199
[2] 4,581
[3] 0,218
[4] 5,032
Using the correct calculator: answer = 4,581
𝐎𝐏𝐓𝐈𝐎𝐍 [𝟐]
1
