Using the equation
(y-y1) = m(x-x1)
Where x1 and y1 are points that lie on the line and m is the slope.
These, be plugging in the values given, we get
(y-(-1))=(-3)(x-2)
(y+1)=(-3x+6)
y+3x-5=0 is the required equation.
Try to find ways that you can easily remember formulas. For example, when you find the line of symmetry the equation is y=-b/2a. A way you can remember that is by saying negative tuba. It seems silly but it’s something you can do for most equations so it doesn’t seem so intimidating.
Answer:
1. Randomly divide the available set of observations into two
parts, a training set and a validation set or hold-out set.
2. Fit the model on the training set.
3. Use the resulting fitted model to predict the responses for the
observations in the validation set.
4. The resulting validation set error rate is typically assessed using
the MSE in the case of a quantitative response. This provides
an estimate of the test error rate.
The yearly increase in a child’s height
the length of a paper clip
