D Co forecasts costs using the model y = a + bx. The intercept is $20. When y = $270 then x = 50.
What is the value of the gradient?
The correct answer is: 5
The point at which the straight line crosses the y axis is the intercept and this is the value of a. The gradient is b.
y
= a + bx
$270
= $20 + (b x 50)
$270 - $20
= 50b
= b
= 5
b
微信号：gaoduntiku
合作账户登录：
账户名：
密码：
关注官方微信
微信号:gaoduneclass
高顿网校
售前咨询(9:00-21:00)
400-168-8811
在线客服点击咨询
售后咨询(9:00-21:00)
021-31068088
fankui@gaodun.com
微信扫一扫实时资讯全掌握
Copyright © 2006- 高顿网校, All Rights Reserved.
