rc-js-util/docs/rc-js-util.mat4._9_.md

A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.

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[Home](./index.md) &gt; [rc-js-util](./rc-js-util.md) &gt; [Mat4](./rc-js-util.mat4.md) &gt; ["9"](./rc-js-util.mat4._9_.md)

## Mat4."9" property

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**Signature:**

```typescript
9: number;
```